Textured Windows
Mac OS X version 10.2 provides developers with a new "textured" window appearance (see Figure 5-4). This window style has been designed specifically for use by- and is therefore best suited to- applications that provide an interface for a digital peripheral, such as a camera, or an interface for managing data shared with digital peripherals, such as the Address Book application.
This appearance may also be appropriate for applications that strive to re-create a familiar physical device- the Calculator application, for example. Avoid using the textured window appearance in applications or utilities that are unrelated to digital peripherals or to the data associated with these devices.